Home / Uncategorized / Pre-Installed Alltrax SR-48400 Series Motor Controller (SR48400) Sale! Pre-Installed Alltrax SR-48400 Series Motor Controller (SR48400)$533.00 Original price was: $533.00.$475.00Current price is: $475.00. 1 in stock Add Optional Fan :- Alltrax Fan ($38.00) Add Optional Solenoid w/ Diode & Resistor :- JCC-200 48V Only ($87.00) SW180 36V or 48V ($97.00)